Insulating compound.



UNITED STATES PATENT onnron.

NATHAN BOOTH, OF ALEXANDRIA, INDIANA, ASSIGNOR TO BANNER ROOK PRODUCTS COMPANY, OF ALEXANDRIA, INDIANA, A CORPORATION OF INDIANA.

INSULATING COMPOUND.

Speoifiqation of Letters Batent.

Patented April 14, 1908.

To all whom it may concern:

Be it known that I, NATHAN BoorH, a citizen of the United State's,residing at Alexandria, inthe county of Madison and State of Indiana, have invented certain new and use-.

. walls, partitions and floors in cold storage houses, etc.

My invention, in its entirety, consists of a plate or board formed of a composition of mineral in fibrous form (as for instance min oral or rock wool, asbestos, etc.), peat (preferably thoroughly decomposed), wood pulp, flour or other gluten, and a suflicient quantity of grease thoroughly im regnating the entire mass. The peat shoul be of a mucky or fibrous nature, such as is found .in bogs,

and I designate such peat. as bog peat.

In practice I have a desirable product in the following manner: I first produce a binder consisting of approximately per ciating the wood pulp,

with. I have foun that the peat itself is a very good binder for the fibrous mineral and.

cent. peat, 25 per dent. wood pulp, 37 per cent. grease (which may be either animal fat, petroleumor other grease) and 13 per The proportions may be varied cent. flour? somewhat without deleterious results. This binder is conveniently formed by thoroughly disintegrating the eat in a sufficient quantity of water to ma e a thick mush and ass o' grease and flour therethat it seems to have a decided affinity for the grease so that it is entirely possible to make a thorough mixture of the greaseand peat as well as the wood pulp and gluten even 111 the presence of a considerable quantity of water.

The mineral fiber is placed-in water and agitated by any desired means until the fibers are properly separated and I then associate with the fiber from 15 to 20 per cent, more or less, of the binder already described. The igrease having become thoroughly associated with the binder it does not separate therefrom when the binder is placed in the water with the fibers but, by proper agitation, the,

binder becomes thoroughly mixed with the mineral fiber. Thereupon the water is drawn OE and the mass formed, in any desired manner, into desirable shapes. As'soon as the water is drawn off the grease is able to permeate the entire mass quite uniformly and thus render the roduct water-proof.

By this process I am a le to obtain a thorough permeation and water-proofing of the articles with a much smaller proportion of grease than would be required if an attem t were made to permeate the articles with t e grease after the articles have been formed.

I claim as my invention: 1. A composition of matter comprising 'mineral fibers, peat and grease.

2. A composition of matter comprising mineral fibers, peat, wood pulp, flour or other gluten and grease. r

3. A composition of matter comprising mineral fibers, bound together with a binder comprising peat, wood 'pulp, grease and gluten.

4. A composition of matter com risingmineral fibers bound together with a inder comprising approximately 25 per cent. peat, 25 (per cent. wood pulp, 37 per cent. grease an 13 per cent. flour or other gluten.

In- Witness whereof, I, have hereunto set my hand and seal at Alexandria, Indiana,

this'sixteenth day of April, A.- D. one thousand nine hundred and seven.

NATHAN BOOTH [L. S.]

Witnesses;

JAMES S. WALES,

HORACE J. INLON. 

